nebtlen



(No Model.) 2 Sheets-Sheet 1.

A. NESTLEN. LIGHTING AND CLOSING DEVICE FOR BAKERS OVENS. No. 347,953. Patented Aug. 24, 1886.

il 1|- 1| n n! 1 WITNESSES." c I IA/VENT ATTORNEYS.

(No Model.) 2 Sheets-Sheet 2.

. A.- NESTLEN;

LIGHTING AND'GLOSING DEVIGE FOR BAKERS OVENS.

No. 347,953. Patented Aug. 24, 1886 WITNESSES: V W W 'UNITED STATES ATENT rica.

LIGHTING AND CLOSING DEVICE FOR BAKERS OVENS.

EPLECIFICATION forming part of Letters Patent No. 347,953, dated August 24, 1886.

Application filed September 17, 1885. ScrialNo. 177,323. (No model.) Patented in Germany Juno 5. 18s."),

No. 33,570; in Belgium September 9, 18r5, No. 18,789; in Austria-Hungary November 7, 1855, No. 39,864 and l\'o. 58.106, and in Trance November 523 To all whom, it may concern:

Be it known that I, ADOLF NEsTLEN, of Freudenstadt, in the Kingdom of WViirtemberg and Empire of Germany, have invented certain new and useful Improvements in Lighting and Closing Devices for Bakers Ovens, (for which I have obtained Letters Patent in Germany No. 33.570, dated June 5, 1885; in France No. 170,668, dated November 23, 1885; in Austria-Hungary No. 29,864t and No. 58,106, dated November 7, 1885, and in Belgium No. 18,789, dated September 9, 1885.) of which the following is a specification.

The invent-ion relates to an improved device for lighting bakers ovens in such a manner that the light can also be utilized for lighting the room in front of the oven; and the in vention consists of the combination of a supportingframeset into the oven-wall, and having forward-extending brackets and vertical guiderods attached to said brackets.

In the accompanying drawings, Figures 1 and 2 represent a front elevation and a vertical transverse section of my improved lighting and closing device for bakers ovens, showing the slide-plate lowered for lighting up the ovens. Figs. 3 and 4 are alsoa front elevation and a vertical transverse section of the same, showing the slide-plate raised and the light-opening closed. Fig. 5 is a horizontal section on line :0 90, Fig. 1; and Fig. 6, a front view of the supporting-frame and slideplate for opening and closing the light-openin Similar letters of reference indicate corre sponding parts.

Referring to the drawings, ff represent a cast-metal supporting-frame, which is composed of two vertical and four transverse pieces, and which is securely set into the front wall of the oven, flush with the same. The transverse pieces are arranged as follows: one at the top, the second and third respectively above and below the lightopening B of the oven, and the fourth at the bottom of the frame 5 f, as shown in Figs. 1, 2, and 4.

The frameffis provided at the upper and lower ends with forward-extending bracketplates 0 c, that serve to support two vertical guide-rods c e, on which a slide-plate, D,is guided by perforated corner-lugs a a. Theslide- -OVGII.

plate D fits closely to the face of the frameff, so as to close the light-opening B of the oven as 1 tightly as possible. At the upper part of the slide-plate D is arranged a round opening, having an outwardly-projecting flange, g. To this flange is attached a ring-shaped frame, that supports aglass window, g To the ringshaped frame is further secured a sheetmetal shell, H, that has top and bottom openings for the chimney of the lamp by which the oven is lighted. The outer end of the shell or casing H is covered by a lid, G, which is polished at the inside, so as to act as a retlector for throwing the light through the glass window and light-opening B into the oven. The lamp F is supported in line with the light-opening by a holder, E, that is attached permanently by a strap, (1, and angle-irons d d of the ovenwall. The sYidc-plate D is raised by means of handles 00, which are attached thereto, and provided with wooden knobs, as shown in Figs. 1, 3, and 5.

\Vhen the slide-plate D is raised, as shown in Figs. 3 and 4, it closes the lightopcnlng B, and is retained in this position either by friction-springs (not shown in the drawings) or by aset-screw, I). (Shown in Figs. 3and 4.) The shell H is thereby raised above the light, so that the same lights up the space in front of the oven. WVhen the slide-plate D is lowered, the opening of the same is in line with the light-opening of the oven, so that the light of the lamp is thrown into the oven by the re flector, and the interior of the ovenlighted up thereby. When it is desired to have the space in front of the oven temporarily lighted up, while the shell is in position around thelamp, the lid G of the shell H is removed. When no temporary light is required in front of the oven, the whole light is thrown into the same, so as to effectively light up the interior of the The supporting-frameff and slidcplate D may also be used without the light and reflectingshell as a door, for opening or closing the firebox, ash-pit, or other opening of the oven, in which casethe slide-plate may be balanced by counter-weights in the usual manner.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination,with an oven-wall provided with an opening for the passage of light, of an illuminating device supported in IOO front of said opening, a slide for covering or uncovering said opening, a shell attached to said slide and adapted to'surround said illu' minating device on two opposite sides when said opening is uncovered by the slide. and a reflector sn pported by said shell'diametrically opposite said opening, said reflector being removable, substantially as and for the purpose set forth.

2. The combination, with anoven-wall provided with an opening for the passage of light, of an illuminating device supported in front of said opening, a slide having a glass-covered aperture near one end adapted to register wit-h said opening, means for raising or lowering said slide for covering or uncovering said opening, ashell attached to said slide and adapted to surround said illuminating device on two opposite sides when said opening is uncovered by the slide. and a rellector supported by said shell diametrically opposite said opening, substantially as and for the purpose set forth.

3. The combination, with an oven-wall provided with an opening for the passage oflight, of an illuminating device supported in front of said opening, a slide for covering or uncovering said opening, means for guiding the slide, a set-screw in said slide adapted to bear against the guides therefor and hold it in open or closed position, ashell attached to said slide and adapted to surround said illuminating device on two opposite sides when said opening is uncovered by the slide, and a re fiector supported by said shell diametrically opposite said opening, substantially as and for the purpose set forth.

4. The combination, with an oven-wall provided with an opening for the passage ofligiit, of an illuminating device supported in front of said opening, aslide for covering or uncov ering said opening, handles secured to said slide near either side and adapted tostraddle said illuminating device when the slide is moved, a shell attached to said slide and adapted to surround said illuminating device on two opposite sides when said opening is uncovered by the slide, and a reflector supported by said shell diametrically opposite said opening, substantially as and for the purpose set forth. r

In testimony that I claim the foregoing as my invention I have signed my name in the presence of two subscribing witnesses.

ADOLF N ES'ILEN. \Vitnesses:

CARL FISCHER, FRIEDRICH BECKER. 

